Global Patent Index - EP 0919700 A4

EP 0919700 A4 2000-12-13 - DEVICE FOR SEALING GAS TURBINE STATOR BLADES

Title (en)

DEVICE FOR SEALING GAS TURBINE STATOR BLADES

Title (de)

VORRICHTUNG ZUM DICHTEN DER LEITSCHAUFELN VON GASTURBINEN

Title (fr)

DISPOSITIF D'ETANCHEITE POUR AUBES DE STATOR DE TURBINE A GAZ

Publication

EP 0919700 A4 (EN)

Application

EP 98924566 A

Priority

  • JP 9802565 W
  • JP 16265197 A
  • JP 17573497 A
  • JP 18226397 A

Abstract (en)

[origin: EP0919700A1] A sealing device for a gas turbine stator blade, in which a sealing pressure of an inner shroud is raised to enhance a sealing effect. An outer shroud 32 is mounted through heat insulating rings 32a and 32b on a blade ring 50, and this blade ring 50 has air holes 1 and 51, of which the air hole 1 communicates with a space 53 whereas the air hole 51 communicates with a seal tube 2. This seal tube 2 is inserted at its leading end portion 3 into the air hole 51, and a spring 6 is arranged between a projection 4 of the tube 2 and a retaining portion 5 of the air hole 51 to fix the seal tube 2 removably. Cooling air 54 flows on one side from the air hole 1 into the space 53 to cool the shrouds and the inside of a stator blade 31 until it is released from the trailing edge, and on the other hand into a cavity 36 so that the inside of the cavity 36 is kept at a high pressure without receiving a pressure loss because the tube 2 is independent of the space 53. The high pressure air from the cavity 36 flows out from seal portions 40a and 40b, as indicated by arrows S1 and S2, to prevent the inflow of the hot gas from a combustion gas passage. <IMAGE>

IPC 1-7 (main, further and additional classification)

F01D 9/02; F01D 9/06; F01D 11/00; F02C 7/18

IPC 8 full level (invention and additional information)

F01D 9/06 (2006.01); F01D 11/04 (2006.01); F02C 7/18 (2006.01)

CPC (invention and additional information)

F01D 9/065 (2013.01); F01D 11/04 (2013.01); F02C 7/18 (2013.01)

Citation (search report)

Designated contracting state (EPC)

CH DE FR GB IT LI

EPO simple patent family

EP 0919700 A1 19990602; EP 0919700 A4 20001213; EP 0919700 B1 20040901; CA 2263508 A1 19981223; CA 2263508 C 20030819; DE 69825959 D1 20041007; DE 69825959 T2 20050908; US 6217279 B1 20010417; WO 9858158 A1 19981223

INPADOC legal status


2016-07-29 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20160607

- Year of fee payment: 19

2006-03-01 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20050610

2005-09-02 [EN] FR: TRANSLATION NOT FILED

2005-08-24 [26N] NO OPPOSITION FILED

- Effective date: 20050602

2005-06-10 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050610

2005-03-15 [REG CH PL] PATENT CEASED

2004-10-07 [REF] CORRESPONDS TO:

- Document: DE 69825959 P 20041007

2004-09-15 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2004-09-01 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): CH DE FR GB IT LI

2004-09-01 [REG GB FG4D] EUROPEAN PATENT GRANTED

2004-09-01 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CH

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040901

2004-09-01 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040901

2004-09-01 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040901

2004-09-01 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040901

2002-10-23 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020910

2000-12-13 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20001030

2000-12-13 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): CH DE FR GB IT LI

2000-12-13 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7F 01D 9/02 A, 7F 02C 7/18 B, 7F 01D 11/00 B, 7F 01D 9/06 B

1999-06-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990210

1999-06-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE FR GB IT LI